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Two-player turn-based perfect-information games, surreal numbers, impartial games and Sprague-Grundy theory, partizan games
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A chess question of W.T. Tutte
In the German chess problem magazine feenschach, Heft 214 Band XXIV, July-August 2015 pp 178-180, I pose & solve the following mathematical puzzle: "Consider the 25 chess positions deriving from the 2 …